On 25/11/2014 02:54, Zhang Haoyu wrote: > I tested win-server-2008 with "-cpu core2duo,hv_spinlocks=0xffff,hv_relaxed,hv_time", > this problem still happened, about 200,000 vmexits per-second, > bringing very bad experience, just like being stuck. Please upload a full trace somewhere, or at least the "perf report" output. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html